<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        a{
            color: #286ee6;
            text-decoration: none;
            font-size: 20px;
        }
    </style>
</head>
<body>
<a href="index.html">点击返回主页面</a>
</body>
</html>